Front Camera turning black / Low exposure

[Metalingus]

Describe the bug
Hi, I am having some front camera issues with the AT&T Fusion Z phone, it works fine if there's nothing in front of it but as soon as there's an object to focus, the camera flickers and then turns very dark as if the exposure was set super low, I can still see light sources. I tried the demo app on that phone and still the issue is happening. I tried other apps on the mentioned phone and the front camera is working fine.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Welcome page'
2. Click on 'Join Meeting'
3. See error in the camera preview

Video
https://drive.google.com/file/d/1t7Z5J7gfJAgEXhEemtT4OiqaKRLlEyzq/view?usp=sharing

Test environment Info (please complete the following information):

• Device: AT&T Fusion Z (V340U)
• OS: Android 10
• Version amazon-chime-sdk: 0.17.2
• Version amazon-chime-sdk-media: 0.17.2
• Can you reproduce this in the demo app? Yes

[hokyungh]

Hi @Metalingus, Could you try to change some of settings here to see if it improves? You can reference captureRequest for settings it support. We currently do not have device, so feel like it is some of settings it sets there.

[Metalingus]

Hi @hokyungh, I did try many of the combinations and it seems that only the Exposure settings are affecting the output but eventually it goes dark. Is there a way to keep the camera capture settings to the default settings by the phone?

[ziyiz-amzn]

Hi @Metalingus Will the issue occur when you start local video during a meeting as well?

[Metalingus]

Hi @ziyiz-amzn yes it still happens when the meeting starts.

[ziyiz-amzn]

We cannot reproduce this issue using demo app on various Android devices.

I would suggest you follow hokyungh's advise and try more combinations here.

CameraMetadata.CONTROL_AE_MODE_OFF will use phone/application settings. The SDK does not provide a way to customize exposure to default for now. Have you tried to set SENSOR_EXPOSURE_TIME and SENSOR_FRAME_DURATION when AE is off? or play with FLASH_MODE?

[Metalingus]

Thank you @ziyiz-amzn and @hokyungh, I was able to solve the issue by using the following parameters:

captureRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, CaptureRequest.CONTROL_AE_MODE_OFF) captureRequestBuilder.set(CaptureRequest.CONTROL_AWB_MODE, CaptureRequest.CONTROL_AWB_MODE_AUTO) captureRequestBuilder.set(CaptureRequest.SENSOR_SENSITIVITY, 650) captureRequestBuilder.set(CaptureRequest.SENSOR_EXPOSURE_TIME, 71692200) captureRequestBuilder.set(CaptureRequest.CONTROL_AE_LOCK, true)

[ziyiz-amzn]

Cool! Glad to see it works. closing this now.